Lock-joint for drilling-tools



' .F. M. HAYNES.

LOCK JOINT FOR DRILLING TOOLS.

APPLICATION FILED AUG-4, I917.

Patenfaedi Oct. 12, 1920."

J&

To all whom it may concern:

UNITED STATES PATENT OFFI,CE.

FAY M. HAYNES, 01E" EN'CAMPMENT, WYOMING.

' LOCK-JOINT FOR DRILLING-TOOLS.

Specification of Letters Patent. lPateIrted 06b. 12 1920.

Application filed August 4, 1917. Serial no. 184,518.

Be it known that I, FAY M. HAYNEs, a

citizen of the United States, andresident' of Encampment, in the county of Carbon and State of Wyoming, have invented certain liable to work loose, hence causing what is called a fishing ob, which is very labor1- ous, and often delays the drilling operation for a considerable length of time. This type of safety joints-is formed with ahead and socket, which are adapted to be engaged and partially rotated to cooperatively lock, and also is provided with additional locking means, which is insertible when the first mentioned locking-meansis in operation. Another object of the invention is toprovide a device of this character which is easily and simply constructed, inexpensive to manufacture, and one which will be very efficient in operation. v i \Vith these and numerous other objects in view, my invention consists of the novel features of construction combination and arrangement of parts which will be herein referred to and more particularly pointed out in the specification-and claim. c

In the accompanying drawi'ngs Figure 1 is an elevation of the lock joint;

Fig. 2 is a vertical section through the same; 7 v I Fig. 3 is a horizontal section taken on the line 33 of Fig. 2; and c, 7

' Fig. 4 is a horizontal sectiontaken on the line H of Fig. 2. j

Fig. 5 is a fragmentary perspective view showing the interlocking relation of the wings and rib portions of the look joint. I

In describing my invention I shall refer to the drawings in which similar reference characters designate corresponding parts throughout the several views.

The safety lock joint includes broadly a head member 1, and a socket member 2, which are adapted to be cooperatively engaged and interlocked in a manner to be hereinafter more fully described. The head member 1' is provided at its outer end with an internallythreaded cone shaped socket 3, while the outerend of the socket member K has a projecting cone shaped externallythreaded portion 4:, such parts being of the conventional type for connection in'a drill ing mechanism, as is readily apparent to those skilled in the art.

inner ends with flat sides 5- soia s to facilitate relative rotation between the parts when they are assembled, fora purpose to be here The head and socket members are provided adjacent their inafter more "fully described. The sooket member 2 adjacent its outer end is eXternall'y threaded as shown at 6' for a purpose to be hereinafter more fully described.

The head member '1 is provided with a projecting rod? which extends from an annular enlargedportion 8 011 the outer end thereof, and said rod 7 has formed on its" other end a pair of projecting wings 9, at diametrically opposite points; i The rod 7' is provided between the enlarged portion 8,

and wings with alining filler strips 10, which have their inner edges grooved as shown at 11 so as to loosely engage theadjacent' portion of the rod 7. r v

The socket member 2 has formed therein I aninner chamber 12 and-this chamber ad'- 'jacent to its open end has provided on dia- V metrically opposite sides inwardly project- ;ing rib portions 13 which are longitudinally grooved as at 14 for accommodating the rod 7. The rib portions 13 are approximately the 1 length of the filler strips 10, the latter being adapted to engage with said rib portions 13' to fill the space between them and to come flush with theinner ends thereof when the rod 7 is inserted in'the socket member and turned therein.

The socket member 2 is'providedwithga pair of elongated alining apertures or openings 15 therethrough, and the extremity of the rod: 7 is likewiseprovided with a cortively engage the external threads 6 of said socket member, whereby the sleeve is adapt- I each other, When the rod portion ed to be positioned over the ends of the pin 16, to securely hold the same in position, as clearly shown in Fig. '1 of the drawings, the sleeves being held from turning by a set-screw18.

In operation when it is desired to connecta drill bit,*the filling strips" l0'are' understood that the rod isturned one,

quarter revolution in order to lock it in position, inwhich positlon the fillercstrlps V will takeup side play while stationed bei V tween the top edges of the-wings 9 and the 20 enlargementS, Wing to the fact that the wings are'adapted to slide between the inwardly projecting rib portions 13' of the chamber within said socket, it is obvious 7 that the socket member and head member are adapted-to be slidably connected7w1i1th as '7 been inserted as faras possible within the SOQkGt' member, the enlarged portion 8 thereof will be positioned in the open end of the chamber in said socket member as clearly shown in Fig. 2 of the drawings.

When in this position,.the members are parv,tially rotated, whereupon the wings are positioned at right angles to the rib portion 13 in the passage within the socket member and thereby lock therod7 within the socket member,

To additionally secure the members locked position, when the first locking action has taken placeuas has been thus described,

the alining openings 15 and 16 in the socket member and on the extremityof the rod 7 ,will aline," so. as toy-permit a supplemental locking pin 17, to extend transversely therethrough. WVhenthe pin is in vposition, the

longitudinally adjustable sleeve l8cis moved V 7 down over the opposite ends thereof, to prevent accidental displacement of said pin, 7 the sleevebeing held from turning as speci V fied. This double locking movement will securely hold the members together, and prevent any possibility-of the drilling bit becoming disengaged. Y

*FIQIIlIiQllG foregoing, t isfobvious that I: have provided a very simple and quickly: attached and-detached locking joint of this- I insaid socket member. 7 v V 7 From the above description taken in connectionwith the accompanying drawings, it is thought that a clear and comprehensive V character, that will be very efficient and durable in operation. The double locking operation, will absolutelyprevent the drill- 7 ing bit from working loose and hence causing the consequential loss in time and labor.

To disconnect this joint, it is only necessary to remove the locking sleeve- 18, disengage the pin l'Z, and rotate the head and socket members back to the first mentioned 7 position, whereby the projectlng rod 7 may be easily withdrawn through the restr1cted passage inthe outer end ofthe chamber 12,

understanding of the construction, operation and advantages ofmy invention may be had, and while I have shown and described the' device as embodyinga specific f structure, I desire that it be understood that vsuch changes may be made in said structure as do not depart from the spirit and scope of the invention as claimed.

Having. fully described my invention,

- what I claim as new, and desire tosecure by Letters Patent is V A lock joint of the character described," comprising a head member having a re-' duced portion forming a rod and an en largementconcentrically of the rod at the innerend of the latter, wings formed on the rod at the outer end thereof, filler strips between the, wings'and the enlargement, a

socket member having a chamberfor receiv- 7 ring the rodand wings, opposed rib portions formed inthe chamberIadjacent the open 'end thereof and adapted to receive therebetweenthe r0d,-whereby. on the turning of the head membenor the socket member the "wings and rib' portionsiwill be interlocked with each other, said filler strips being de- I signed to fill the space between the rodand the wall of the chamber,'said socket member and rod being formed with apertures adapted to register with each-other on the interlocking of thewings and rib. portions,

a key removably fitted. in: the apertures when in registration witli -each other, and

a sleeve externallythreaded on the socket member and adapted to move over the apertures therein for retainingthe key in place.

In testimony whereofI'aflix my signature" hereto.

FAYMKHAYNESQ" I 

